How many moles are there in a 2,500 cm 'sample of oxygen at a temperature of 24 °C and a pressure of 125 kPa?

Explanation:

using the formula pv=nRt where p= pressure =125 v= volume =2500= 25.oom3 to meter n = mumber of moles =? T= temperature = 24 =24+273=297k

which is given as R so inputting the values we have 125×25=n×8.3×297 3125=2465.1n dividing all with the coefficient of n we have

1.27= n therefore no of moles =1.27